diff options
| author | Adam Langley <agl@chromium.org> | 2014-08-13 21:31:52 +0400 |
|---|---|---|
| committer | Adam Langley <agl@chromium.org> | 2014-08-14 20:42:45 +0400 |
| commit | b8b5478248deae0d0f97ec38792fea5120bbfc49 (patch) | |
| tree | a4519869a0fe1c3945aa8819535a28639a11c148 /include/openssl/bn.h | |
| parent | 660140206ed32aa217ba3f299debae8d9ac472ec (diff) | |
Expose two, rather internal, BIGNUM functions.
Android uses these for some conversions from Java formats. The code is
sufficiently bespoke that putting the conversion functions into
BoringSSL doesn't make a lot of sense, but the alternative is to expose
these ones.
Change-Id: If1362bc4a5c44cba4023c909e2ba6488ae019ddb
Diffstat (limited to 'include/openssl/bn.h')
| -rw-r--r-- | include/openssl/bn.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/openssl/bn.h b/include/openssl/bn.h index d9863941..d8aa2151 100644 --- a/include/openssl/bn.h +++ b/include/openssl/bn.h @@ -284,6 +284,22 @@ OPENSSL_EXPORT int BN_print_fp(FILE *fp, const BIGNUM *a); OPENSSL_EXPORT BN_ULONG BN_get_word(const BIGNUM *bn); +/* Internal functions. + * + * These functions are useful for code that is doing low-level manipulations of + * BIGNUM values. However, be sure that no other function in this file does + * what you want before turning to these. */ + +/* bn_correct_top decrements |bn->top| until |bn->d[top-1]| is non-zero or + * until |top| is zero. */ +OPENSSL_EXPORT void bn_correct_top(BIGNUM *bn); + +/* bn_wexpand ensures that |bn| has at least |words| works of space without + * altering its value. It returns one on success or zero on allocation + * failure. */ +OPENSSL_EXPORT BIGNUM *bn_wexpand(BIGNUM *bn, unsigned words); + + /* BIGNUM pools. * * Certain BIGNUM operations need to use many temporary variables and |